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Box
-
A box region with sides parallel to the axes of a Frame
- Description:
- The Box class implements a Region which represents a box with sides
parallel to the axes of a Frame (i.e. an area which encloses a given
range of values on each axis). A Box is similar to an Interval, the
only real difference being that the Interval class allows some axis
limits to be unspecified. Note, a Box will only look like a box if
the Frame geometry is approximately flat. For instance, a Box centred
close to a pole in a SkyFrame will look more like a fan than a box
(the Polygon class can be used to create a box-like region close to a
pole).
- Constructor Function:
- astBox
-
Inheritance
- The Box class inherits from the Region class.
-
Attributes
- The Box class does not define any new attributes beyond
those which are applicable to all Regions.
-
Functions
- The Box class does not define any new functions beyond those
which are applicable to all Regions.
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Up: AST Class Descriptions
Previous: Axis - Store axis information
AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 211
R.F. Warren-Smith & D.S. Berry
24th May 2011
E-mail:ussc@star.rl.ac.uk
Copyright (C) 2009 Science \& Technology Facilities Council